(19) |
 |
|
(11) |
EP 0 906 727 A3 |
(12) |
EUROPEAN PATENT APPLICATION |
(88) |
Date of publication A3: |
|
26.05.1999 Bulletin 1999/21 |
(43) |
Date of publication A2: |
|
07.04.1999 Bulletin 1999/14 |
(22) |
Date of filing: 13.07.1998 |
|
|
(84) |
Designated Contracting States: |
|
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE |
|
Designated Extension States: |
|
AL LT LV MK RO SI |
(30) |
Priority: |
14.07.1997 US 891885
|
(71) |
Applicant: EPL TECHNOLOGIES, INC. |
|
Philadelphia, PA 19113-1507 (US) |
|
(72) |
Inventors: |
|
- Gawad, Kamelya I.
Fresno,
California 93704 (US)
- Gawad, Hesham A.
Fresno,
California 93704 (US)
|
(74) |
Representative: Ganguillet, Cyril |
|
ABREMA
Agence Brevets & Marques
Ganguillet & Humphrey
Avenue du Théâtre 16
Case postale 2065 1002 Lausanne 1002 Lausanne (CH) |
|
|
|
(54) |
Compositions and processes for maintaining the integrity of freshly-cut apples |
(57) Compositions and processes are disclosed for treating fresh-cut apple pieces by dipping
cut apple pieces in an aqueous solution containing GRAS (Generally Recognized As Safe)
substances that protect the cut apple pieces from deterioration due to increased enzymatic
activity, oxidative reactions, water migration and microbial effects during the extended
shelf life of the fresh-cut apples pieces. The composition consists principally of
L-cysteine, sorbitol and calcium chloride. A chelator such as sodium hexametaphosphate
can be added to enhance the affiance of the agent. Cysteine is present in a concentration
of 1.00-4.00 g/l of solution, sorbitol at 2.00 g/l, and calcium chloride at 1.0-10.0
g/l. The ratios of these compounds are altered to meet the different needs of specific
apple cultivars, condition of the raw materials and distribution requirements. Apple
cultivars that have responded to this treatment in combination with the appropriate
modified atmosphere packaging include Empire, Fuji, Granny Smith, Golden Delicious,
Red Delicious, Ida Red, Pippin, Rome, and Gravenstein. A synergistic effect is observed
when apple pieces are packaged in a film that will equilibrate to oxygen and carbon
dioxide levels in the range of 0.5-5.0% and 7.0-37.0%, respectively. The formulation,
concentration, treatment parameters, packaging film, and packaging type (e.g. tray,
bags) are selected based on the specific cultivar, the quality of the starting raw
material, the final product specs, and the distribution channels. Raw material specs
are characterized by pressure, starch content, and soluble sugars. The treatment protocol
in the processing plant is designed to meet the needs of individual apple processors.

